Engine
a technology for engines and cylinders, applied in the field of engines, can solve the problems of large design problems, large engine design problems, and inability to meet the needs of operation, and achieve the effects of reducing manufacturing costs and difficulty, and reducing emissions
Inactive Publication Date: 2015-04-09
SUZHOU CLEVA PRECISION MACHINERY & TECH
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Benefits of technology
The present invention provides an engine that can be well lubricated in both a leant or inverted state. The engine is designed to reduce the consumption of lubricating oil and maximize the use of space. This is achieved by re-designing the top structure of the rocker chamber and creating a separation cavity and connection channel. This design optimizes the lubricating system, reduces emissions, lowers manufacturing costs, and makes assembly easier.
Problems solved by technology
However, the four-stroke engine has a more complicated lubricating system which causes the engine to help little when operating in a leant angle.
Lubrication becomes the major design issue of each engine vendor.
However, the engine designed in this manner is wider, heavier and more expensive.
However, this lubricating system is more complicated.
Particularly, a complicated oilway passage is disposed on a cylinder block, so that the processing is complicated and the cost is improved.
Method used
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Embodiment Construction
[0032]The present invention will be further described hereinafter with reference to the specific embodiments.
[0033]According to a preferred embodiment of the present invention is as shown in the figure. FIGS. 1-4 show a four-stroke engine which is vertically disposed, including a crankcase 1, an oil pan 2, a cam box 3, a rocker chamber 4 and an air filter 6. The oil pan 2 is used for storing lubricating oil. The crankcase 1 is disposed above the oil pan 2. A crank shaft 10 is disposed in the crankcase 1 and is jointed with a piston 7 in a cylinder 8. The motion of the piston 7 in the cylinder 8 causes pressure change in the crankcase 1. The oil pan 2 and the crankcase 1 are communicated through an oil supply passage 21. One end of the oil supply passage 21 is provided with an oil suction portion 215. When proper lubricating oil is provided in the oil pan 2, the oil suction portion 215 can be always kept below a lubricating oil level when the engine is leant or inverted, so that the ...
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An engine includes a cylinder, a rocker chamber, an air filter, a crankcase and a rocker chamber cover, wherein the rocker chamber cover is disposed above the cylinder. The engine further includes a cover plate, wherein the cover plate is located at the top of the rocker chamber cover, and the rocker chamber cover and the cover plate are spliced to form a separation cavity and a connection channel. According to the engine provided by the invention, the top structure of the rocker chamber is re-designed and the top space of the rocker chamber is sufficiently used so as to achieve the objects of optimizing a lubricating system and reducing emission, as well as reducing the manufacturing cost and difficulty.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of PCT / CN2013 / 000613 filed May 27, 2013, which claims priority to CN 201210198827.9 filed Jun. 15, 2012, both of which are incorporated by reference.TECHNICAL FIELD[0002]The present invention relates to an engine.BACKGROUND ART[0003]Like a hand-held mower (shears) and a knapsack operation machine targeted to vert, conventional two-stroke and four-stroke small-size general engines have been widely used as engines of the operation machines that drive operating personnel to hold by hands or bear on the back for operation. Since contaminant discharge provisions become stricter, the need of changing a drive source from a two-stroke engine into a four-stroke engine is increasingly improved. However, the four-stroke engine has a more complicated lubricating system which causes the engine to help little when operating in a leant angle. Lubrication becomes the major design issue of each engine vendor. At present,...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02F7/00
CPCF02F7/0002F02F7/0043F02F7/0021F02B63/02F01M1/04F01M11/02
Inventor KONG, ZHAOGUO, NINGCHEN, GANFENG, KEYA
Owner SUZHOU CLEVA PRECISION MACHINERY & TECH